Die-magazine.



J. L. RIFER.

DIE MAGAZINE.

APPLICATION FILED MAR. 11, 1 12.

1,082,768. Patented Dec. 30, 1913.

WITNESSES: IN l/EN TOR JOHN L. RIFER, 0F PORTLAND, OREGON.

DIE-MAGAZIN E.

Specification of Letters Patent.

Patented Dec. 30, 1913.

Application filed March 11, 1912. Serial N 0. 683,095.

To all whom it may concern:

Be it known that I, JOHN L. RIFER, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Die-Magazines of which the following is a specification.

My. invention relates to a device for cutting screw-threads on pipes, bolts and similar articles, and the object of my invention is to provide a convenient hand tool embodying all the mechanism necessary for threading articles of. the character mentioned of various diameters.

To this end the device consists of a magazine in which a series of adj ustably mounted for independent service.

The further objects and features of my invention are clearly set forth in the following description, and the operation of the device is readily understood by having reference to the appended drawings, in which:

Figure 1 is a plan view of a device embodying my invention, Fig. 2 is a side elevation of the device and is drawn substantially in agreement with Fig. 1, and Fig. 3 is a plan view of the device with parts removed in order to disclose the inclosed mechanism.

The threading device comprises a perforated body 1 the open faces of which are closed by plates or covers 2 and 3. In the chamber thus formed are slidably mounted a series of thread-cutting dies 6, 7 8. It is noticed that the chamber is elongated and that it comprises a main chamber 10 and narrow passage 10?.

The said dies are made with a head portion fitted to slide in the main chamber 10 and a neck portion which substantially fits the passage 10 The necks of the dies have on one side teeth 11 which engage the threads of a series of worms 12, and the latter are rotatably fixed in the wall of the magazine. Said worms may all be mounted on one side, or, in order to gain room, they may be staggered as shown in the drawings.

The die 6 is made with small diameter cutting threads and the threads of the succeeding dies 7, 8 and 9 increase in diameter in any suitable ratio. The largest diameter die 9 may be stationary, and is in the drawings shown to substantially fit the main chamber 10, within which it then remains fixed. The remaining dies are mounted to threading dies are slide through the medium of the worms 12. The large die is thus always available for use, but if a smaller die is required it is moved forward by turning its worm 12.

The open sides of the magazine, as stated, are closed by the plates 2 and 8, and said plates are made with alined perforations 13 large enough to admit any pipe or rod which will pass through the die 9. The plate 2 has in addition means for guiding the article to be threaded. The said means comprises a series of gage slides 14: seated in grooves 15 of said plate and fixed in position by screws 16, which extend through elongated perforations of said slides. Scales 17 may conveniently be cut in the pla-tefor registration wit-h a line 18 of each slide, and the latter may thus quickly be set to correspond with the required die.

Finally I wish to state that, while four dies are shown, more or less may readily be employed.

I claim:

1. In combination, an elongated magazine, closed on both sides by plates having alined perforations, a plurality of die blocks mounted for limited movement in said magazine, and means for independently moving said blocks within their limits, the die blocks so proportioned that they, at their extreme forward position, register with said plate perforations, and totally clear said perforations when completely retracted.

2. In a device of the character described, an elongated die magazine, a series of solid dies, mounted for longitudinal sliding movement in said magazine, a pair of detachable side plates on said magazine for guiding and retaining said dies in position, said plates having alined perforations, and means for independently moving said dies to a position of registration with the perforations of said plates.

3. In combination, a magazine comprising an elongated chamber made with a narrow extension, said magazine closed on each side by a detachable plate, said plates having alined perforations for inserting the parts to be threaded, die blocks having an integral neck slidably mounted in said extension, said neck threaded on one side for engagement with thumbscrews detachably hung in the wall of the magazine.

4:. In combination, an elongated magazine closed on both sides by detachable plates said plates having alined perforations for insertion of stock to be threaded, die blocks mounted to slide longitudinally in said magazine, the dies so proportioned, as to register with the plate perforations when fully advanced and to totally clear the said perforations when fully retracted, and manually operated means for independently moving said dies.

5. In a device of the character described, in combination; a magazine integral with the handle of the device, said magazine having an elongated chamber from which extends a narrow pocket, a pair of plates covering the open sides of said magazine and provided with alined perforations; a series of threading dies mounted in said magazine, said dies comprising a head-portion provided with a cutting perforation and a neck portion positioned to slide in said pocket, a series of teeth in said neck portion; and a series of screws mounted in the wall of the magazine for registration with and engaging the teeth of the neckportion of said dies. Y

6. In a device of the character described, in combination; a magazine integral with the handle of the device and having an elongated chamber from which extends a narrow pocket, a pair of plates covering the open sides of said magazine and provided with alined perforations; a series of threading dies mounted in said magazine, said dies Witnesses:

IRENE MOORE, C. W. HILLS.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner oi Patents, Washington, D. G.

JOHN L. RIFER/ 

